Jeremiah often wrote prophecy in the form of poetry. Hebrew poetry uses different kinds of parallelism. (See: [[rc://en/ta/man/jit/writing-poetry]] and [[rc://en/ta/man/jit/figs-parallelism]])
Yahweh speaks of Judah's sins being so great that they cannot stop committing them as if someone had engraved their sin permanently. (See: [[rc://en/ta/man/jit/figs-metaphor]])
Here the word "Judah" represents the people of Judah. This may be expressed in active form. Alternate translation: "Someone has written the sin of Judah" (See: [[rc://en/ta/man/jit/figs-activepassive]])
The sinful habits of the people are spoken of as if their sins had been engraved on their own hearts. The word "hearts" refers to the whole person: their thoughts, emotions, and actions. Alternate translation: "engraved in their very beings" (See: [[rc://en/ta/man/jit/figs-synecdoche]])